23cef7caa89e178965930bc7258676f67a54f52567292f67514e4626000b39f0

Analysis

max time kernel
120s
max time network
95s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
03-09-2024 17:26

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General

Target

77aa964b7c99628603a0d482e64158d0N.exe
Size

67KB
MD5

77aa964b7c99628603a0d482e64158d0
SHA1

940f1f032ebfca4014c888caeab33796138670b7
SHA256

23cef7caa89e178965930bc7258676f67a54f52567292f67514e4626000b39f0
SHA512

35939c3aaf70a2c3d71e87ed10c2ba51a8744254cf6555369900d3bc7ba7c3d1092042ba92a4cce2824cab73904805fe7d142c84e173add2315cea5aaaa3ebd2
SSDEEP

768:V7Blpf/FAK65euBT37CPKKQSjyJJcbQbf1Oti1JGBQOOiQJhATNydWK9WKTZQZ1+:V7Zf/FAxTWoJJZENTNyoKIKt

Score

9^/10

discovery ransomware upx

Malware Config

Signatures

Renames multiple (4538) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
ransomware

UPX packed file 4 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/464-0-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/files/0x000900000002347b-2.dat	upx
behavioral2/files/0x0004000000022922-6.dat	upx
behavioral2/memory/464-850-0x0000000000400000-0x000000000040B000-memory.dmp	upx

Drops file in Program Files directory 64 IoCs

description	ioc	Process
File created	C:\Program Files\Microsoft Office\root\Office16\LogoImages\WinWordLogoSmall.scale-100.png.tmp	77aa964b7c99628603a0d482e64158d0N.exe
File created	C:\Program Files\Common Files\microsoft shared\MSInfo\it-IT\msinfo32.exe.mui.tmp	77aa964b7c99628603a0d482e64158d0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.ComponentModel.TypeConverter.dll.tmp	77aa964b7c99628603a0d482e64158d0N.exe
File created	C:\Program Files\Java\jre-1.8\lib\cmm\CIEXYZ.pf.tmp	77aa964b7c99628603a0d482e64158d0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\O365HomePremR_Subscription1-ul-oob.xrm-ms.tmp	77aa964b7c99628603a0d482e64158d0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProjectPro2019R_OEM_Perp-ul-oob.xrm-ms.tmp	77aa964b7c99628603a0d482e64158d0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\VisioPro2019R_Grace-ppd.xrm-ms.tmp	77aa964b7c99628603a0d482e64158d0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\ru\UIAutomationProvider.resources.dll.tmp	77aa964b7c99628603a0d482e64158d0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\ja\System.Windows.Controls.Ribbon.resources.dll.tmp	77aa964b7c99628603a0d482e64158d0N.exe
File created	C:\Program Files\Google\Chrome\Application\123.0.6312.123\Locales\sw.pak.tmp	77aa964b7c99628603a0d482e64158d0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\zh-Hans\UIAutomationTypes.resources.dll.tmp	77aa964b7c99628603a0d482e64158d0N.exe
File created	C:\Program Files\Java\jdk-1.8\bin\api-ms-win-core-timezone-l1-1-0.dll.tmp	77aa964b7c99628603a0d482e64158d0N.exe
File created	C:\Program Files\Java\jdk-1.8\jre\lib\security\blacklist.tmp	77aa964b7c99628603a0d482e64158d0N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\MEDIA\ARROW.WAV.tmp	77aa964b7c99628603a0d482e64158d0N.exe
File created	C:\Program Files\Google\Chrome\Application\123.0.6312.123\Locales\am.pak.tmp	77aa964b7c99628603a0d482e64158d0N.exe
File created	C:\Program Files\Java\jdk-1.8\jre\legal\jdk\freebxml.md.tmp	77aa964b7c99628603a0d482e64158d0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\O365HomePremR_SubTest1-pl.xrm-ms.tmp	77aa964b7c99628603a0d482e64158d0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProPlusR_OEM_Perp2-pl.xrm-ms.tmp	77aa964b7c99628603a0d482e64158d0N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\ADDINS\Microsoft Power Query for Excel Integrated\bin\Microsoft.PowerBI.AdomdClient.dll.tmp	77aa964b7c99628603a0d482e64158d0N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\FPA_FA000000011\FA000000011.tmp	77aa964b7c99628603a0d482e64158d0N.exe
File created	C:\Program Files\Common Files\microsoft shared\ClickToRun\vcruntime140.dll.tmp	77aa964b7c99628603a0d482e64158d0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\de\System.Windows.Forms.resources.dll.tmp	77aa964b7c99628603a0d482e64158d0N.exe
File created	C:\Program Files\Google\Chrome\Application\123.0.6312.123\Locales\te.pak.tmp	77aa964b7c99628603a0d482e64158d0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\VisioProVL_MAK-ppd.xrm-ms.tmp	77aa964b7c99628603a0d482e64158d0N.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\uk-UA\InputPersonalization.exe.mui.tmp	77aa964b7c99628603a0d482e64158d0N.exe
File created	C:\Program Files\Java\jre-1.8\bin\prism_common.dll.tmp	77aa964b7c99628603a0d482e64158d0N.exe
File created	C:\Program Files\Java\jre-1.8\THIRDPARTYLICENSEREADME-JAVAFX.txt.tmp	77aa964b7c99628603a0d482e64158d0N.exe
File created	C:\Program Files\Microsoft Office\root\Document Themes 16\Theme Colors\Blue.xml.tmp	77aa964b7c99628603a0d482e64158d0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\HomeBusinessR_Trial-ul-oob.xrm-ms.tmp	77aa964b7c99628603a0d482e64158d0N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\api-ms-win-crt-stdio-l1-1-0.dll.tmp	77aa964b7c99628603a0d482e64158d0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.IO.IsolatedStorage.dll.tmp	77aa964b7c99628603a0d482e64158d0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Xml.XPath.XDocument.dll.tmp	77aa964b7c99628603a0d482e64158d0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\zh-Hant\UIAutomationProvider.resources.dll.tmp	77aa964b7c99628603a0d482e64158d0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\wpfgfx_cor3.dll.tmp	77aa964b7c99628603a0d482e64158d0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\HomeBusiness2019R_OEM_Perp3-ppd.xrm-ms.tmp	77aa964b7c99628603a0d482e64158d0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProjectStd2019R_Retail-ul-phn.xrm-ms.tmp	77aa964b7c99628603a0d482e64158d0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\System.Drawing.dll.tmp	77aa964b7c99628603a0d482e64158d0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\MondoR_Subscription-ul-oob.xrm-ms.tmp	77aa964b7c99628603a0d482e64158d0N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\LogoImages\FirstRunLogoSmall.contrast-black_scale-100.png.tmp	77aa964b7c99628603a0d482e64158d0N.exe
File created	C:\Program Files\Common Files\microsoft shared\ClickToRun\ClientEventLogMessages.man.tmp	77aa964b7c99628603a0d482e64158d0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\de\System.Windows.Forms.Primitives.resources.dll.tmp	77aa964b7c99628603a0d482e64158d0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\it\System.Windows.Forms.resources.dll.tmp	77aa964b7c99628603a0d482e64158d0N.exe
File created	C:\Program Files\Google\Chrome\Application\123.0.6312.123\vk_swiftshader_icd.json.tmp	77aa964b7c99628603a0d482e64158d0N.exe
File created	C:\Program Files\Java\jdk-1.8\jre\lib\ext\sunmscapi.jar.tmp	77aa964b7c99628603a0d482e64158d0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProjectStdCO365R_Subscription-pl.xrm-ms.tmp	77aa964b7c99628603a0d482e64158d0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\Publisher2019R_Grace-ul-oob.xrm-ms.tmp	77aa964b7c99628603a0d482e64158d0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Net.Quic.dll.tmp	77aa964b7c99628603a0d482e64158d0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\hostpolicy.dll.tmp	77aa964b7c99628603a0d482e64158d0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\es\UIAutomationTypes.resources.dll.tmp	77aa964b7c99628603a0d482e64158d0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\System.Security.Permissions.dll.tmp	77aa964b7c99628603a0d482e64158d0N.exe
File created	C:\Program Files\Google\Chrome\Application\123.0.6312.123\Locales\ca.pak.tmp	77aa964b7c99628603a0d482e64158d0N.exe
File created	C:\Program Files\Java\jre-1.8\lib\deploy\ffjcext.zip.tmp	77aa964b7c99628603a0d482e64158d0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\createdump.exe.tmp	77aa964b7c99628603a0d482e64158d0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\O365ProPlusR_Subscription2-pl.xrm-ms.tmp	77aa964b7c99628603a0d482e64158d0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProfessionalPipcR_OEM_Perp-ul-oob.xrm-ms.tmp	77aa964b7c99628603a0d482e64158d0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\System.Diagnostics.EventLog.Messages.dll.tmp	77aa964b7c99628603a0d482e64158d0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\zh-Hans\System.Windows.Input.Manipulations.resources.dll.tmp	77aa964b7c99628603a0d482e64158d0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\Microsoft.Win32.SystemEvents.dll.tmp	77aa964b7c99628603a0d482e64158d0N.exe
File created	C:\Program Files\Microsoft Office\root\Client\api-ms-win-crt-environment-l1-1-0.dll.tmp	77aa964b7c99628603a0d482e64158d0N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\LogoImages\WinWordLogo.contrast-black_scale-100.png.tmp	77aa964b7c99628603a0d482e64158d0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\Microsoft.NETCore.App.runtimeconfig.json.tmp	77aa964b7c99628603a0d482e64158d0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\pt-BR\PresentationCore.resources.dll.tmp	77aa964b7c99628603a0d482e64158d0N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\ADDINS\Microsoft Power Query for Excel Integrated\bin\Microsoft.Data.Edm.NetFX35.dll.tmp	77aa964b7c99628603a0d482e64158d0N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\api-ms-win-crt-multibyte-l1-1-0.dll.tmp	77aa964b7c99628603a0d482e64158d0N.exe

System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	77aa964b7c99628603a0d482e64158d0N.exe

C:\Users\Admin\AppData\Local\Temp\77aa964b7c99628603a0d482e64158d0N.exe
"C:\Users\Admin\AppData\Local\Temp\77aa964b7c99628603a0d482e64158d0N.exe"
1⤵
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
PID:464

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\$Recycle.Bin\S-1-5-21-355097885-2402257403-2971294179-1000\desktop.ini.tmp

Filesize
67KB

MD5
3ed9cf680fe73879ee341bb35e8e08e9

SHA1
4ea1d50f12a032694ad687ff5228dab992b6078b

SHA256
a86ca39044ea7463b0b3f5994bd7032a3cb11b789cc189c712386ede9bb71066

SHA512
65083dd7899b4f544d95e6a1288f06c27a6ec6ab9d3f3e46b6603353dd5a2c9b5ed2fea5c81d57661b94ee98711256f84d1714a9c9c3554987945ff4d57cdd8e

Download Submit
C:\Program Files\7-Zip\7-zip.dll.tmp

Filesize
166KB

MD5
cbde4fd054dba3662cdb577bb6f8109d

SHA1
3af1df3c51aece9e34e916a0d4f47425194e7e59

SHA256
ad7faf5aeec658fa1703f523c7b8002f6b2d8cc5d8f4eeace4ece6e6c2cf9501

SHA512
a33da75eb2f3bd83c166464324164ade7116c6253c9affc1ae9094010bdd39f5d65b4f1ebbe8b645fd64322107a110176d01f09134523fb0e650874f2129a1bf

Download Submit
memory/464-0-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/464-850-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download